Tube forming machine



SeJt 2, 1947- R. SONNENBERG ET AL 2,426,714

TUBE FORM LNG MACHINE lFiled Jangzo, 194s 1o sheets-sheet 1 y@ Je,

` INVENTORS.

v Sept. 2, 1947. v R. sQmErsuBERG4 ETAL A 2,426,714

TUBE EoRMNG MACHINE R. soNNENBER ETALl 2,426,714

Sept. 2, 1947.

TUBE FORMING MACHINE l0 Sheets-Sheet 5 Filed Jan. 30, 1945 INVENTORS.

n ATTORNEYS'.

SePt 2,1947. R SONNENBERG ET Al. 2,426,714

TUBE FORMING MACHINE INVENTORS.

Sept-2, 1947. R. SONNENBERG ETAL l2,426,714l

TUBE-FORMINQ MACHINE Filed.` Jan. 30, 1943 10 Sheets-Sheet 8 INVENTORS.

' tozjeerys.

' Sept. 2 1947. R. SONNNBERG lET AL I v 2,426,714'

TUBE FORMING MACHINE Jafomey.

Sept. 2,1947. R. SONNENBERG ET AL 2,426,714

TUBE FORMING MACHINE Filed`Jan. 30, 1943 lO- Sheets-Sheet 10" Patented Sept. Z, 1947 Rudolph Sonnenberg, Belvidere, and` Irvin L.

Young, Chicago, Ill. l'

Application January 30, 19.43 Serial'No.-.47.4,154

,2 claims. (c1. 934--5511l rIhis invention relates to pasteb'oard tubes of the type employed as containers for milk bottle caps, and more particularly to means to form the tubes to serve the special purpose.

The pasteboard tubes under consideration are usually about 2 it. long and 2 in diameter, and are intended to receive a considerable supply of the common pasteboard milk bottle caps in stacked succession. The caps all face in one direction, so that the foremost one shows the day for which it is to be used, such as Tuesday, Wednesday, etc., the practice in home delivery of milk being to date each bottle daily. Thus, after a tube has been lled with caps, the end opposite the foremost cap is provided 'with' a Cellophane Window, while the other end is closed. Thus, when such a tube has been delivered to the dairy, the day marked on the particular supply of caps is readily noted through the window, making it easy to choose or select the tubes.

The present invention has for one of its objects to provide a machine which prepares or alters the tubes from the original or open form to that which is suitable for lling them with caps. In other words, the machine primarily forms a closure at the window end of the tube and leaves the other end open to facilitate the lling thereof. However, the machine also prepares such other end which is closed by the cap manufacturer after the tube has been filled, in a manner to facilitate its easier removal at the dairy or place where the tube is opened for the removal of its contents.

Another object of the the invention is to provide a machine of the above character which first imposes an internal barrier in the form of an annular bead, the latter being positioned at a point where the window is to be set.

A further object of the present machine is to treat the opposite end of the tube by cutting a rotary series of slits or perforations in the tube at a point a short distance from such end, so that the portion beyond the perforations may be readily removed by hand.

Another object of the machine is to provide means for the supply and insertion of the Cellophane window in the first mentioned end of the tube and against the bead.

Another object of the machine is to provide means for forming an internal stop in the end of the tube beyondv the window to hold the same against the bead.

An additional object of the machine is to provide a mechanism which only requires the initial deposit of the open tubes into a hopper or a like receptacle, such mechanism serving to movethe tubes forward as fed and to impose the aforesaid formations on them.

An important object oi the machine is to provide, acmechanism'which is automatic throughouthar,monio us in itsaction, simple in construction, and capable of continuously delivering the tubes. in a1 form t0, beready for filling with Vthe bottle caps.

With the, above obj ects in view, and any others 'whichmay suggest; themselves from the descriptionV toV follow, a better understandingl of the invention may b'e had by reference to the accompanying drawings, in which- Figs. la., to 1f' are fragnfientaly sections ofthe pasteboard tube, showingsteps in its formation;

Fig; 2 isa frontal perspective View oi the machine; showing protective casings A and B Aomitted inother views;

Y Fig. 3l is a magnified view of the upper lefthand portion of the machine, showing a series of the pasteboardtubes in succession. Y

Fig. 4 is a iront elevation ofthemain portion of the machine;

Fig. 5 is; a left-hand side View thereof;

Fig. 6 is a top plan view;

Fig; 7 is an enlarged'elevation partly in sec.-l

tion, of the *unit* in the left-hand upper portion of Fig. 5; l

1ig.-8l is'a Vright-hand'side view ,of Fig. '7;

i Fig; 9' is a sectionon the line 9 9 of Fig. 3, partlyin elevation; K

Fig. -1i)v is a right-hand view of Fig. 9;V

Fig;V 111 is an enlarged; section on the line H-Hof Fig. 6, partly nelevation;

Figs; 12, 13, 14 aridA A15 are enlarged sections onthe lines i2-Ul2, Iii-i3,y Iii- 141, and 15u-l5, respectively, of Fig. 6;`

Fig. 164 is an enlarged duplicationl of the unit in thepupper right-hand corner of Fig. 4, partly in-section; j

' Fig. 1711san eniargosecuonon the une n n ofv rug.- 15;

l Fig; isis a section on the une' s -ss of, Fig. 17; 45

Fig. l9is a, Section*V on the line IS-l Qof Fig. 18; Figs. 2O and 21 are sections on the-lines F and E, respectively, of`r Fig. 5, and

Figs. 22 to 29 are, respectively, details of4 cam controls taken on'the lines A, B, vC, D, G, H, I and J oi Fig. 5; and viewed in the left-handelirection. i

' vIn; accordance with the' foregoing, specific reference4 to the drawings yindicates the base of the machine' at', the same beingat floor level,V The frame-ofthe machine is essentially composedof a pair of vertical plates 3| and 32 extending from front to rear, front and rear vertical plates 33 and 34 extending side-wise `from the Yplate 3|, inward top angle plates 35 and 36 extending between the plates 33 and 34, a top 31 mounted over the angle plates, and a vertical side plate 38 extending outwardly from the plate 32.

Figs. 2 and 5 show a typical hopper 40 of V shape in which a supply of pasteboard tubes 4|` may be deposited from time to time for delivery to the machine. Figs. 7 and 8 show the lower Y portion of the hopper, and that the same carriesk a horizontal shaft 42 having a number of starwheels 43 mounted thereon. As shown in Fig. 7, peripheral divisions of these Wheels conform to ythe curvature of the tubes 4|, and it is intended that the rotation of the shaft 42 in a counterclockwise direction, according to Fig. 7,' procure 1 the downward feed of the tubes. The periodical rotation of the shaft Vis initiated by the vertical reciprocatory motion of a lever 44 having an arm'45 pivoted on the shaft 42, the arm having a pawl 46 directed to ratchet teeth 41 carried by a collar 48 fast on the shaft. It is thus seen that i v each upward movement of the lever 44 will induce a partial turn of the star-Wheel series 43 to feed a tube. A seriesY of agitators forY the tubes 'in the lower portion of the hopper is indicated at 49, these being mounted on a shaft 50 carried by the hopper, and this shaft being operated from the star-wheel shaft 4Z by a chain l drive 5|. The tubes 4| are intended to Ydrop onto a conveyor Which is represented by the top runs of a pair of laterally spaced chains 52 located between the frame plates 3| and 32. The drive for the conveyor chains originates with an electric motor 53 secured on the base plate 30.

'A belt drive 54 rises from the motor to a pulley V55 carried by a frontal shaft 56, the latter being supported in bearings 51 extendingV rearwardly from the plate 33. The shaft 56 carries a worm 58 meshed with a vertical gear 59 located above the same. .The gear is mounted on a long shaft 66 journaled in the plates 33 and 34, this being the main shaft of the machine. f Near its end, the shaft 66 carries a worm 6|, which is in mesh with a gear 62 below the same, such gear being. fastened on a-shaft 63. Y a bearing 64 carried by a rear plate 34 and a bearing 65 carried by the p1ate.3|. The inner end of The latter is journaled in the shaft 63V carries a crank 66 vwhich is attached to a link 61 extending forwardly to -a point near the front'of the machine. Here the link Y61 is l pivoted at 68 to the lower end of a lever 69.

The conveyor chains 52 Vare mounted "on by eccentric bearings 12, these being mounted in boxes 113. nected by cross bars 12b and links 12e for the partial rotation of the bearings to adjust the conveyor. rThe frontal shaft 1I carries a ratchet v.wheel 14, and the lever Y69 is enlarged at its upper end as indicated at 15 and freely mounted on the frontal shaft. IThe enlargement 15 of the lever carries a pawl 16 adaptedV to engage the ratchet Wheel 14 and move the same over the distance `of a tooth every time the lever swingsrback from vthe pull of the link 61.

The conveyor is thusV Vsprocket wheels 10, thel latterA being carried byr 1 cross shafts 1 I. These are supported at the ends The bearings carry levers 12a con- 4 outlet of theY hopper 40 each time a tube 4| is dropped therefrom, so that the receptacles may take up the tubes in a going'series asindicated in Figs. 5 and '1. The level of the conveyor is maintained by rails 52a over which the receptacles ride, the rails being carried by brackets 52D mounted on the shafts 1|, as indicated in Fig.4. As the tubes Yare carried forward by the top run of the conveyor, it is Yintended thaty the lefthand portion of each tube--as Aseen from the front or in Figs. 3 and Ll--receive a crimping impression near Vthe end effective to create an internal annular bead. For thisY purpose 'a unit shown more clearly in Figs. 9 and l0 is employed.

YThe frame of the particular unit is indicated at 86, and it is rigidly carried by a rearward extension 8| of a table 82 .mounted on the machine top 31. It will sufce at this-time to state that the table 82 undergoes short periodical movements inwardly'of the machine, and Fig. 9 Vshows the particular unit :advanced in accordance with the. yThe unit has aV inward position of the table. horizontal bearing 83 for a spindle 64 which carries a pulley 35 receivingaV continuousV belt drive 86 from a pointbelow. YThe spindle 64 protrudes from the inner side of the bearing 83 to receiveV a spring-backed sleevea Vand assume'the formY of anannularly grooved head 84a. The bearing B3 has a pair of rearward brackets lcarrying a shaft 86.' A frame 69 is pivoted on the latter, one end'of Y'the fram'eoccurring directly over the bearing S3 and terminating with a similarly posi--Y tioned bearing 96. A spindle 9| isrjournaled Vin the bearing 99 and carries a roller 92 tapering tov Y its periphery directly above the groove of the head 85a. Fig. 9 Vshows a tube 4| positioned for treatment by the beading unit, and it maybey assumed that this unit has rmovedV towardrthe right to position the head 84a of the spindle 4l inside the tube, and the 'sleeve 85a acting as. a 'shockabsorbing stopagainst the end of the tube. Since the head 64a isV in continuous rotation, the depression of the bearing Si!Y Vto impress the roller 'sa in .the tube will induce both the rotation of the f tube and of therollerso that the latter will imfV posean external groove in the tube defining an internal bead 673. tube 4I of Fig'. la'is indicated in Fig. 1b. The

frame 89 is'clamped on the shaft Sas indicated .at 89a and extended beyond the pivot with an arm $34.V receiving motion Yfrom afdrop link .95 having a vertical reciprocatory movement.. It

is understood that when 4the bead has been formed, the table 62 will receive a backing move-` ment to withdraw the spindle .64a from theV tube and permit the latter to proceedon the movement of the conveyor. y The next treatment of the' tube'involvesth opposite end thereof, that is, thejright-hand'end as seen in Fig. 4. Asrpreviously mentioned, a cir' Vcular series of slits or perforations is lmade a short distance before this end. Thefpurpose Vof'these slits or perforations can be understood whenthe particular end of the tubeis considered Vasan open orreceivingpne when the caps are deposited therein. Thus, the caps mayfbefinserted or stacked to the extent ofthe series ofrslits or Y slightly beyond them, after whichoperation the 'particular end ,cf the tube Vis foldedrinwardly or otherwise treated to close itahd form a barfor theyescape of the caps.V Now, when atube treated as. explained Vis received atV the dairy,.the series Y ofslits vnear the end to be opened makes it easy to tear such end open for the quick' removal o f the caps, whereas. without'the slitformationaV Thechange justy made in the further tearing effort would loosen or unwind the spiral formation of the tube and risk the escape or loss of caps, The choice of the particular tube is of course determined from the marking of the caps visible through the opposite or bottom end of the tube, as was previously explained.

A unitary mechanism isemployed for imposing the slit formation in the tube, such mechanism being more clearly illustrated in Figs. 4 andY l5 to 1.9. Since the right-hand end of the tube is now treated-as seen in Fig. -the mechanism for this purpose is located at the corresponding side of the machine. Here the top 3l receives a frame Hill which carries a pair of laterally-spaced rods |53! which are intended to form ways for the sliding movement of a carriage |92. The latter has a bearing |33 in which is rotatable a spindle mit having a rotary anvil disc |65, The bearing |513 is extended upwardly with a pair oi arms Hi on which are medially pivoted at |01 a pair of brackets |68 supporting a bearing H39 parallel to the bearing m3. The brackets |68 are joined by a frame l l which has an outward arm l to which is pivotally connected at l2 a pendent lever H3. 1n the bearing HillA is journaled a spindle H which carries a toothed wheel H5 at a point directly above the anvil disc |05. Primarily, the latter is intended to be given peri.- odica-l` rotary movements while within the related end of a pasteboard tube 1H, as seen in Fig. 16. The anvil disc |05 and the toothed wheel H5 are operatively connected by a pinion H5 on the spindle |34 meshing with a gear |'l carried on a shaft i8 from which the arms |65 are extended. The gear I |'l in turn meshes with a gear |9 free on the rock shaft |01, and the gear H9 nally meshes with a pinion |20 on the spindle Hl. The anvil disc |05 and the toothed wheel H5 thus rotate in opposite directions; and when the lever H3 is raised, the toothed wheel ||5 descends to cut the slits in the tube 4| and overlap the disc m5 in the manner of a shear, making the slitting operation thorough.

It is intended that the disc |65 and the wheel i l5 receive joint rotary movements approximating twoV revolutions at intervals, the object being to impose only a sufficient slitting operation and not to continue the same to the extent of unduly weakening or possibly severing the tube. In order to induce the movement referred to, the outer end of the shaft |18 carries a. free pulley |2| operated by a belt |22 from a power source below. The gear i is carried by a drum |23 whose outer end is proximate to the inner face of the pulley |2|. Such face has an inwardly projecting pin |25,l and the drum |23 has a series of long but similarly located pins |25, these pins having lugs |25a in the expanding path of the springs |26 to urge the pins |25 in the direction of the pulleys |2|. Each pin |25 is cut with a notch |25b on the outer side; and when the drum turns to locate a pin |25 at the bottom as sho-wn in Fig. 17, the notched portion of the pin rides upon an oblique cam |27 projected from a cross bar |28, the action of the cam being to hold the pin in retracted position relative to the pulley |2l. The latter is in constant rotation, and the projection of any pin |25 from the drum 23 will place such pin in the path of the rotating pin I2@ of the pulley |25 with the effect of driving the drum around with the same. This would be continuous except for the action of the bar |22, which is pivoted at one end to the rear rod IDI and linked with the other end as indicated at |29 to a depending lever |30. Thus, when the latter is raised, it imposes the cam |21 upon the first descending pin |25 to draw the latter out of the path of the revolving pin |24. Thus, the periodical rotation of the drum |23 is procured by thek periodical descent of the bar |28 to the dotted line position of Fig. 18 for a suicient time to expose a given pin |25 to one revolution of the pulley pin |2. The provision of three pins |25 lends the drum |23 a quick drive from the pulley 12|'.

As was the case with the beading unit on the opposite side of the machine, an action is induced to advance and withdraw the slitting unit relative to the tube 1| l1. This actionA is the sliding of the entire. unie-supported by the carriage lin-along the companion rods mi. within prescribed limits. The sliding of, the carriage is determined by the longitudinal reciprocatory motion of a lever |3|. As seen in Figs. 4 and 16, this lever is linked at |3|a near the upper end of a quadrant arm |32 pivoted with its lower end at i32d to the frame plate 38. Tothe quadrant arm is pivoted at |33 the lower end ofa bar |534 which rises to make an adjustable connection |35V in the quadrant slot |36, and continues to be pivoted at |31 to a cross link |38 which is pivoted with its other end at |39 to a pair of lugs lill! depending from the carriage |02, as more clearly indicated in Fig. 15. it will be evident that the movement of the lever |S| will induce the reciprocatory sliding action on the carriage |02, and that the adjust-able connection at |35 enables the carriage to be set at any point along the rods l'l which is most suitable for the proper action of the carriage in relation to the tube 4|. It follows now that the carriage |02 will be in the outer or retracted position as thetubeli-lrv reachesa point opposite the anvil disc |05, and that the carriage will advanceto insert such` disc as shown in Fig. le" during the interval when the tube is at rest, the rotary action of the anvil disc and thetoothed wheel above it occurring at such time in the manner previously described. Incidentally, the lever movement to retract the carriage is positive, while a spring lll-l is used todraw on the quadrant arm |32 to "induce the advance of the carriage. Thus, the tube as just treated will appear as inv the section of Fig. 1c, the slitted formation being indicated at |42.

With the tubes moving forward with the conveyor, the balance of treatments thereto are limited to the first-mentioned ends thereof, that is, those on the leftHhandside of the machine as seen from the front. The next operation on the-tube anticipates insertion of the Cellophane window against the bead 93, paving the way for the same. Specifically, this action requires the` flaring of the related end of the tube for facility in inserting the Cellophane window, and the unit for the flaring operation is more clearlyy illust-rated in` Figs. 5, 6, 9 and 11. Here it is seen that a horizontal chain drive N5 is led from a sprocket |116 on the beading spindle 84 t0 a sprocket |47 carried by a spindle M8 journaled in a bearing standard |49 mounted on the table s2. The spindle |43 is thus in constant rotation, and its inner end carries a D1ug-shaped circular head, |50.v As waspreviously mentioned, the table 82 undergoes periodical transverse movements in inward and. outward directions, and the conveyor is designed tobring each tube 4| in line with the Spindle; head |50 at a time Iwhenthe latter is in the retracted posi.,- tion. Now, the advancing movement ofthetable pushes the head |50 into the open end ofthe 7 tube, flaring the same as indicated at 15| in Figs. 11 and 1d.

The unit for the application of the Cellophane window will now be described, the same being mainly illustrated in Figs. 3, 12 and 1,3. The table 82 carries an upstanding frame plate |55 which takes a lateral course outwardly as seen from the front of the machine. The extreme end of the plate 55 carries a supply roll |56 in freely rotatable relation, the cellophane tape |51 being drawn from the same over a fixed idler unit |58, then under a spring drawn idler unit |59, then under a second fixed idler unit |68, and finally over a rubber surfaced roller |6|. As indicated in Figs. 4 and 12, the tape descends between a receptacle |62 and a cylindrically-bored box |63, the receptacle being of a capacity suitable to fit over the flared end of the tube 4| which may become alined with it as shown in Fig. 12. The box |63 receives the receptacle |62 by means of securing bolts |62a and is mounted on the table 82, so that it periodically recedes and advances with the same relative to the tube. The box |63 conbains a slidable plunger |66 which carries a blanking die |65 at its inner end. Thus, the inward table movement of the box |63 is utilized to ad- Vance the receptacle |52 to iit over the tube 4| as the conveyor alines the same with the receptacle, while the advance of the plunger |64 is independently induced to punch a section |66 from the Cellophane tape |51 and deposit same against the bead 93 as shown, so that the window in the corresponding end of the tube 4| appears as indicated at I 66 in Fig. le.

The action of the plunger |64 is obtained by the use of a pair of knuckle-links |61 originating from a pair of table posts |68. Y Full lines in Fig. 3 and dotted ones in Fig. 12 show the knucklelinks raised by virtue of the upward push of a lever |69 to retract theV plunger |64, while full lines in Fig. 121 show the links straightened to advance the plunger when the lever |69 descends. It may now be mentioned that the rise of the lever |69 is positive, while the descent thereof is induced by the pull of a spring on one of the links |61, the lower end of the spring being connected to the angle bar 35 after passing through openings 82a and 31a in the table 82 and top 31, respectively.

In order that a supply of the Cellophane tape may be continually furnished for the treatment just described, a power feed for the roller 16| is provided. This feed originates with a rising lever which makes an adjustable pivotal connection |16 with a radial arm |11 pivoted on a shaft |18 journaledin a frame plate bearing |5511. The arm |11 carries a ball clutch block |19 freely mounted on the shaft |18. The drum and the roller 6| are fast on the shaft |18. Thus, the rising movement of the lever |15 induces the rotation of the drum and roller in the direction indicated by arrows in Figs. 12 and 13; and a pressure roller |8| is provided against the frontal side of the Cellophane tape |51 to steady its feed, the roller |8| being carried by a frame |82 pivoted at |83 to the frame plate |55. The frame |82 has an adjustable springV setting |84 extending from a frame plate post |85 to maintain pressure on the roller |8|. y

A cut-off for the bottom remnant of the Cellophane tape |51 is provided in the form of a beveled knife |90 below the cylinder |63. The knife is carried by a bracket |9| from the machine structure plate 3|, and the cutting operation is effected by the movement of the box |63 relative to the' knife, the latter carrying a backing spring |92 to cushion the `action. It may be mentioned at this point that the advancing movement of the box |63, which is also that of the table 82, is not positive, but bythe action of a spring |93 below the angle plate 36. This spring draws on a lever |94, which is in turn connected to a drop lug |95 of the table by a cross link |96.

The unit for the final treatment of the tubes 4| will now be described. Figs. 4 and 14V show a frontal bearing standard 200 whose base is secured on the table 82 by bolts 20| or other suitable fastening means. The standard 200 journals a horizontal shaft 202, one end of which carries a pulley 203 which is operated continuously by a belt 204 leading from a power source below. The opposite end of the shaft 202, which is inwardly directed, is formed with a head 205 which has an annular cavity 206 with a restricted entrance opening 201 facing the path of the tubes 4|. A set of four peripherally grooved rollers 208 is rdistributed in a circular series in the cavity 206, the rollers being free to rotate on screws 209 driven into the center stock of the head 205. 'Ihe outer stock thereof lis formed with openings 2|!) for the application of the screws after the rollers have been mounted thereon. The foremost tube 4| is designed to have a stopping point opposite the head 205, and when the table 82 takes an inward movement, the rotating head 205 advances on the related end of the tube 4'| in the manner of a die, the action of the rollers 208 causing the end portion of the tube to fold inwardly upon itself as indicated in Fig. 14. The length of the end portion is so calculated Vas to cause the internal fold 2| to meet the Cellophane window as a result of the infolding operation, so that the window becomes locked in place and the corresponding end of the finished tube appears as in Fig. 1f. The outer wall of the head 205 has extra openings 26611 for the dissipation of heat generated by the frictional operation of the rollers 208.

While the tubes 4| may retain their position on Y the conveyor during the progressive movement Vof the same, it is essential that such tubes as receive the forming treatments be held steady against rotation or vibration during the treatment intervals, Thus, a series of three hold-down units 2|5 are projected over the tubes receiving ythe beading, slitting and window-inserting operations. The units 2| 5 are in the form of downbent rods projecting inwardly of the machine from clamps 2| 6 secured on a rock shaft 2|1.

'Ihe lower ends of the rods carry cushion blocks 2|8 of rubber or other material in contactwith the top portion of the affected tubes. A crank 2|9 at the rear end of the shaft 2|1 is adapted to receive periodical movements to raise and lower the hold-down units 2|5 through the agency of a pendent lever 220 which has a vertically reciprocating motion. It is understood that the holddown units 2|5 are raised during the progress of Y the conveyor and drop during every stopping point thereof.

Two more hold-down devices are provided, one

Vbeing a rod 22| extending from a clamp 22'2 mounted on a rock-shaft 223 which is situated some distance below the rock-shaft 2|1. The rod 22| carries a bottom cushion 224 over the tube .4| which is opposite the flaring unit |49; and the rock-shaft 223 has a crank 225 at its rear end which has a function similar to the Vcrank 2|9 in response tothe movement of al control lever 226. Both rock-shafts are jour- .naled in the bearings 221 `and 228 rising from the frame of the machine. The other hold-down devi-ce carried by the rock shaft 223 comprises Aa bracket 229 free on the rock-shaft and adjusted in a downward direction by a set screw 239 threaded through a clamp 213| secured at 232 to the rock-shaft. The Vbracket 229 carries a rsubstantially horizontal bar 233 which extends in a position directly behind and over the foremost tube lll, carrying a pairl of hold-down blocks 239 which rest on the tube. The clamp 229 is thus adjustable to impart a desired amount of pressure on the tube to resist the rotative infolding action of the unit 205. Also, freelyrotatable backing discs 234a are provided for -v vroller 12315 :at :the .bottom which yrides on a cam 233 lcarried by the shaft 60. The roller 235 is kept in position over the cam by a link 231 which is pivoted at V233 from a bracket 239 extending from the frame plate 3|.

By reference to Figs. and 23, it will be noted that the lever 220 is next in line. This lever descends Ialongside a cam 22) carried by a shaft S9, placing a roller 22| under the cam so that the latter has a downward influence on the lever. The upward pull on Vthe same is exerted by a spring 222 which thus renders vthe action of the hold-down units 215 yieldable. The lever 226 is seen near by and also in Fig. 24, and this lever is applied in a manner similar to the lever 220 in respect to a shaft cam 293 by means of a roller 244 and a 4draw spr-'ing 235. The springs 2512 and 295 are secured to the frame plate 3| of the machine.

Figs. 5 and 25 show a cam 24'3, which follows the cam '263. The cam 2156 is vemployed to control a roller 241 carried by the bottom of the lever 95 which controls the beading unit 283 of Figs. 9 and 19. A spring 2659 draws upwardly on the lever 95, whereby to make the descent and application of the roller `92 yieldable.

Figs. 5 and 21 show the unit next in line. 'The same consists of a cam 250 mounted on the shaft E0 and receiving `a roller 25| from beneath. The roller is carried by a bell crank lever 252 pivoted intermediate its ends to a bracket 253 of the frame plate 3|. The inner end of the lever receives a long rod 255 which extends across the machine to one arm of a bell crank lever 255 carried by the frame plate 32, as seen in Fig. 4. The other arm of the bell crank 255 is connected to the lever |13 which operates the slitting device shown in Figs. 15 to 19.

The next unit in line is a cam 250 mounted on the shaft @il and more clearly shown in Fig. 20. It is seen that the cam 250 receives a roller 23| from a bell crank lever 252 in the same manner as the unit just previously described, to make connections with a cross rod 263 extending to the opposite side of the machine to connect with one arm of a bell crank lever 254, the other arm thereof being connected to the lever |30 which controls the slitting device of Figs. 15 to 19. It will be noted that the rods 254 and 263 receive draw springs 255 and 236 from the frame plate 32, whereby to control the slitting mechanism by spring action.

The unit next in line is represented by a cam 210 mounted on the shaft 30. As indicated more Vvlower roller 28| from behind.

.clearly :in Fig. 26, fa follower roller 211| is mountfed inwardly of the cam on ya link 212 carried by sa bracket 213 `of the frame plate 3|, the upper end-of the link making connection with the cross vlever -|3| which operates the carriage |02 of the tube slitting unit, as illustrated in Figs. 4 and 16.

Figs. y5 a-nd 27 show `the Vunit next in line, and Yof which Ia `partial yillustration on a large scale `is :evident in Fig. 12. A cam 21.5 in this unit is .mountedon the shaft' and receives a follower roller 216 from below. This roller is carried by a .li-nk v2,11 extending from a bracket 218, the .outer end of the linkconnecting with the lever `|15 which actuates the Cellophane tape feed device shown in Figs. 1-2 and 13. "As noted, a draw spring 2119 yconnected `to the lever |15 is employed .toinduce |the feed.

Figs. 5, 28 and 12show the means for moving .the table A32' and box |63. A cam 280 is shown mounted vvon the -shaft and receiving a fol- This roller is `carried by the link |94 previously described which is rconnected to the `table by the parts and |95. .As-mentioned before, the spring |93 is employed to induce the advancing action of the table.

The next unit in line involves a cam 285 mounted on the shaft -60 and'receiving a follower roller 206 from above. This roller is carried by a Alink 29-1 from a -frame lplate bracket 2818, as more clearly shown in Figs. 12 and 29. The :link 281 is connected to the link |69 which extends upwardly Ato `the joint of the :knuckle links |61. It is noted that the draw spring |10 is connected to `one of these in order to straighten the -knuckle links and induce the feed of the plunger |64 by spring action.

While the motor .v5-3 is the main power source `of the machine through the transmission of its motion to the shaft 60, a different power source -is used for the units which require greater speed, such source being in the form of a secondary motor 290 mounted on a platform 29| which is pivoted at 292 to a bracket 293 of the frontal frame plate 33. The motor 290 carries a pulley 294 from which va belt 295 -extends rearwardly to a pulley296 mounted on Va shaft 291 which .extends crosswise to the opposite side of the .machine and receives a key-way 298 in its remote portion, the shaft being journaled in bearings 299 and 300 carried by the frame plates 3| and 32, respectively. The proximate portion of the shaft carries a pulley 30| which receives the belt 93 from the pulley B5 of the beading unit illustrated in Figs. 9 and 10. At the farther end of the shaft 291 is a sliding pulley 302 which receives the belt |22 from the pulley |2| of the unit shown in Figs. 15 to 19, it being understood that the movement of the carriage |02 requires the belt |22 to be shiftable and therefore requiring the sliding disposal of the pulley 302. However, the movement of the carriage |02 is relatively short, so that no undue strain or devating influence is imposed on the belt |22 or the levers ||3 and |30. The motor 290 also carries a pulley 303 which receives the belt 204 from the pulley 203 of the inturning unit illustrated in Fig. 14. The pivoted support 292 of the motor 290 permits the weight of the motor to take up slack in the belts 204 and 295.

Fig. 6 shows the application of a, handwheel 394 to the shaft 56 for facility in momentarily operating the machine when the power is off.

It will be evident from the structural and functional characteristics of the machine described l 1 above that the basic action of thesame is to alternate the advance of the pasteboard tubes with operative actions thereon, the tubes being at rest whilesuch operations are performed. At the same time, the advance of the operative units upon the tubes is synchronized with the motion of the running gear in a manner to function when the tubes are at rest and recede while they take the next advancing movement. Thus, when Ythe machine is viewed in action, a concerted movement from opposite sides in the inward direction is noted while the tubes are at rest and a similar outward movement releases the tubes for the advance. Considering that both of these movements"involve a plurality of units controlled from the zone of the main shaft 60, Vit is appreciated that such zone concentrates the controls of the several operative units in a compact and concealed space below the table of the machine, so that the transmission of motion to the various units is not spread out or unduly complicated. Further, as has beenspecied in several instances, the motion'toA the operative units is transmitted through springs, so that the units may yield slightly if necessary to imperfections or inequalities in the work or positions thereof, making the operations on the tubes yieldable instead of rigid or positive. miscellaneous functions performed in the machine, it may be said that only such parts or instrumentalities are involved therein as are necessary to perform the said functions, and that the said parts and instrumentalities are designed along lines of simplicity and in keeping with accepted machine practice. An assembly is thus had which is sturdy, Well balanced and durably constructed to serve its intended purpose.

While we have described the improved machine along specific lines, it is apparent that minor changes or refinements may be made therein without departing from itsrprinciple, and we desire to consider such changes and refinements as coming within the scope and spirit of the appended claims.

We claim:v Y

1.,"A machine for imposing formations in the end Aportions of pasteboard tubes comprising a conveyor adapted to receive the tubes in succession at the rear of the machine and to trans- Considering the 12 port them in a forward path, the tubes extending cross-wise of the latter, a Series of operative units along one side of the machine to impart internal beading, window' inserting and end-infolding formations on thek related endv portions of the tubes as these progress with the conveyor, and a unit operative along the other side of the machine to impart an annular slitting formation on the related end portions of the tubes, said internal beading, window-inserting and end infolding units having joint means for their application, a major power source controlling said means, said internal-beading,V end-folding and slitting units also including constantly rotating implementsV effective on the application of the units, and an independent power source for such implements.

2. A machine for imposing formations in the end portions of pasteboard tubes comprising a conveyor adapted to receive the tubes in succession at one end of the machine and to transport them with a stop motion toward the other I end of the machine, a series of operative units at the sides of the conveyor and geared in synchronism with the same to'impose said formations during the stopping periods of the tubes, a series of hold-down elements operable downwardly to engage the tubes receiving the formations, and means geared in synchronism with the conveyor to permit said hold-down elements to be effective lduring said stopping periods of the tubes to hold them in xed positions, said means being operative to raise such hold-down elements clear of the tubes while these are in motion.

. RUDOLPH SONNENBERG.

IRVIN L. YOUNG.

REFERENCES CITED The following references are of record in the Frederick et al. July 20, 

